package com.ruoyi.system.controller.common;

import com.google.code.kaptcha.Producer;
import com.ruoyi.common.constant.CacheConstants;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.constant.UserConstants;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.core.redis.RedisCache;
import com.ruoyi.common.utils.sign.Base64;
import com.ruoyi.common.utils.uuid.IdUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.util.FastByteArrayOutputStream;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletResponse;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 * 验证码操作处理
 * 
 * @author ruoyi
 */
@RestController
//@CrossOrigin
public class CaptchaController
{
    @Resource(name = "captchaProducer")
    private Producer captchaProducer;

    @Resource(name = "captchaProducerMath")
    private Producer captchaProducerMath;

//    @Autowired
//    private RedisCache redisCache;

    @Autowired
    private StringRedisTemplate stringRedisTemplate;
    

    /**
     * 生成验证码
*/
    @GetMapping("/system/captchaImage")
    public AjaxResult getCode(HttpServletResponse response) throws IOException
    {
        AjaxResult ajax = AjaxResult.success();
        boolean captchaEnabled = true;
        ajax.put("captchaEnabled", captchaEnabled);


        // 保存验证码信息
        String uuid = IdUtils.simpleUUID();
        String verifyKey = UserConstants.CAPTCHA_CODE_KEY + uuid;

        String capStr = null, code = null;
        BufferedImage image = null;

        // 生成验证码
        String captchaType ="math";
        if ("math".equals(captchaType))
        {
            String capText = captchaProducerMath.createText();
            capStr = capText.substring(0, capText.lastIndexOf("@"));
            code = capText.substring(capText.lastIndexOf("@") + 1);
            image = captchaProducerMath.createImage(capStr);
        }
        else if ("char".equals(captchaType))
        {
            capStr = code = captchaProducer.createText();
            image = captchaProducer.createImage(capStr);
        }
        stringRedisTemplate.opsForValue().set(verifyKey, code, Constants.CAPTCHA_EXPIRATION, TimeUnit.MINUTES);
//        redisCache.setCacheObject(verifyKey, code, Constants.CAPTCHA_EXPIRATION, TimeUnit.MINUTES);
        // 转换流信息写出
        FastByteArrayOutputStream os = new FastByteArrayOutputStream();
        try
        {
            ImageIO.write(image, "jpg", os);
        }
        catch (IOException e)
        {
            return AjaxResult.error(e.getMessage());
        }

        System.out.println("uuid:"+uuid);
        System.out.println("验证码是："+code);
        Map result = new HashMap();

        result.put("uuid", uuid);
        result.put("img", Base64.encode(os.toByteArray()));
        result.put("verifyCode",code);

        return AjaxResult.success("ok",result);
    }


//    @GetMapping("/system/captchaImage")
//    public AjaxResult getCode(HttpServletResponse response) throws IOException{
//        Map result = new HashMap();
//        result.put("uuid", "uuid");
//        result.put("img", "image....");
//
//        return AjaxResult.success("ok",result);
//    }
}
